Retina vs Reality: Why Sony Ericsson's new screen could challenge

Pocket-Lint: Sony Ericsson has announced that its new smartphone, the Sony Ericsson Xperia Arc, will have a new screen technology it’s calling a Reality Display, but what does that mean exactly? Will it be any good, and how does it match up against the Apple Retina display, considered by many to be one of the best in the market at the moment?